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Haustorial morphology of Cronartium conigenum in naturally infected cones of three Pinus species from Guatemala 1
Author(s) -
Rayachhetry M. B.,
Webb R. S.,
Kimbrough J. W.,
Miller T.
Publication year - 1995
Publication title -
european journal of forest pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.535
H-Index - 49
eISSN - 1439-0329
pISSN - 0300-1237
DOI - 10.1111/j.1439-0329.1995.tb00330.x
Subject(s) - haustorium , tracheid , xylem , parenchyma , phloem , botany , pith , biology , loranthaceae , host (biology) , ecology
Summary Haustorial morphology of the cone‐rust pathogen, C. conigenum , was investigated among naturally infected female strobili of three Guatemalan pines, P. maximinoi, P. pseudostrobus , and P. oocarpa . Among the three pine species, haustorial shapes and sizes were more variable in P. maximinoi and P. oocarpa than in P. pseudostrobus . The haustorial shapes and sizes were more variable in parenchyma cells of the cortex, xylem, and pith than in the cells in the phloem, xylem rays, and tracheids. The haustoria were also present in larger numbers in the parenchyma cells of the cortex, xylem, and pith than in phloem parenchyma cells and tracheids. In living cells, the tips of some haustoria were appressed to the host nuclei.